{"id":"CVE-2026-105112","title":"Nezha from 1.8.0 before 2.3.13 contains a lock-order inversion in UpdateGroup and DeleteGroup that allows authenticated non-admin users to deadlock the alerting subsystem","summary":"Nezha from 1.8.0 before 2.3.13 contains a lock-order inversion in UpdateGroup and DeleteGroup that allows authenticated non-admin users to deadlock the alerting subsystem. Attackers can concurrently call the notification-group and batch-…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-362"],"vendor":"nezhahq","product":"nezha","affected":["nezha >= 1.8.0 < 2.3.13"],"published":"2026-10-03","updated":"2026-10-03","sourceUpdated":"2026-10-03T14:16:37.677","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105112","references":[{"url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-53vr-p24v-qvwf","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/nezha-1.8.0-before-2.3.13-deadlock-dos-via-notification-group-endpoints","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-03T14:47:06.462Z","slug":"CVE-2026-105112","body":"## Overview\n\nNezha from 1.8.0 before 2.3.13 contains a lock-order inversion in UpdateGroup and DeleteGroup that allows authenticated non-admin users to deadlock the alerting subsystem. Attackers can concurrently call the notification-group and batch-delete endpoints with oversized id lists to widen the race and close an ABBA cycle, permanently killing alert delivery until restart.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}